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Alter martensitic phase transformation kinetics by forming Ni-rich nanolayer in metastable austenitic steels

论文摘要

A 5 nm Ni-rich nanolayer has been introduced along nanoscale martensite/austenite phase boundaries（PBs） by one-step lowtemperature annealing treatment of cold-rolled meta-stable austenitic steels. Control experiments reveal that the martensitic phase transformation kinetics can be significantly altered by presence of the nanolayers. The growth of pre-existed martensites is substantially suppressed while the martensite nucleation in austenites is less affected, as revealed by a statistical investigation on the martensite size distribution under different tensile strains. Enhanced strength and excellent ductility have been achieved simultaneously in the annealed samples, demonstrating that PBs can be effectively engineered to achieve optimized mechanical properties.

论文目录

  • 1 Introduction
  • 2 Materials and methods
  • 3 Discussion and conclusions

    • 文章来源

    类型: 期刊论文

    作者: ZHANG YiZhi,LIU JiaBin,WANG HongTao

    来源: Science China(Technological Sciences) 2019年04期

    年度: 2019

    分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

    专业: 金属学及金属工艺

    单位: Institute of Applied Mechanics, Zhejiang University,College of Materials Science and Engineering, Zhejiang University

    基金: supported by the National Natural Science Foundation of China(Grant Nos.11725210,11572281),the Fundamental Research Funds for the Central Universities(Grant No.2018XZZX001-05)

    分类号: TG142.25;TG156.2

    页码: 546-550

    总页数: 5

    文件大小: 588K

    下载量: 15

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